Résultats de la recherche
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A preliminary assessment for mackerel icefish (Champsocephalus gunnari) in Division 58.5.2, based on results from the 2019 random stratified trawl survey
Abstract: The annual random stratified trawl survey was undertaken in Division 58.5.2 in the ... , abundance and yield in Division 58.5.2 to the west of 79 o 20’ E using standard CCAMLR methods (CMIX and ... Generalized Yield Model). The 2019 survey showed a large 2+ and 3+ cohort in the population. Catches of 527 t ... in the 2019/20 season and 406 t in the 2020/21 season, respectively, satisfied the CCAMLR decision ...
Meeting Document : WG-FSA-2019/02 : Auteur(s): D. Maschette, G. Nowara and D. Welsford
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Surveys of breeding penguins and other seabirds in the South Shetland Islands, Antarctica, January – February 1987
Abstract: Surveys of the South Shetland Islands, Antarctica in 1987 provided data on the size and ... location of penguin and Antarctic Blue-eyed Shag colonies and the breeding status of other seabirds. Our ... estimate of 1,618,370 to 2,084.570 breeding Chinstrap Penguins, the most abundant penguin in the study area ... . is two to three times the previous estimate. Other seabird species were also found to be more ...
Meeting Document : SC-CAMLR-VI/BG/19 : Auteur(s): W.D. Shuford and L.D. Spear (USA)
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New data on trematodes (Plathelminthes, Trematoda) of fishes in the Ross Sea (Antarctic)
Abstract: Records of 14 trematode species, collected from bottom fishes from the western and ... northern parts of the Ross Sea, are given. Trematodes Otodistomum cestoides van Beneden, 1871, Lecithaster ... . are recorded from the Ross Sea for the first time. Proctophantastes sp. differs from other species of ... Proctophantastes Odhner, 1911 by the morphology of the ventral equatorial ridge of the ventral sucker. Author(s ...
Meeting Document : WG-EMM-14/P08 : Auteur(s): S.G. Sokolov and I.I. Gordeev
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New data on trematodes (Plathelminthes, Trematoda) of fishes in the Ross Sea (Antarctic)
Abstract: Records of 14 trematode species, collected from bottom fishes from the western and ... northern parts of the Ross Sea, are given. Trematodes Otodistomum cestoides van Beneden, 1871, Lecithaster ... . are recorded from the Ross Sea for the first time. Proctophantastes sp. differs from other species of ... Proctophantastes Odhner, 1911 by the morphology of the ventral equatorial ridge of the ventral sucker. Author(s ...
Meeting Document : WG-FSA-14/P02 : Auteur(s): S.G. Sokolov and I.I. Gordeev
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Preliminary analyses of an ectoparasite Eubrachiella antarctica as a marker for stock discrimination of Antarctic toothfish in the Ross Sea
Abstract: This project evaluated the prevalence and intensity of an ectoparasite Eubrachiella ... antarctica as a marker for stock discrimination of Antarctic toothfish in the Ross Sea. New Zealand Ministry ... of Fisheries Observers on four toothfish longline vessels recorded the number of E. antarctica on the ... fins and in the buccal cavity of 621 large D. mawsoni (mostly 120-150 cm). Up to five D. mawsoni per ...
Meeting Document : WG-FSA-06/28 : Auteur(s): P.J. Smith, A. McKenzie and L. Tubbs (New Zealand)
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A preliminary assessment of age and growth of eel cod (Muraenolepis sp.) and violet cod (Antimora rostrata) in the Ross Sea, Antarctica
obtained from the bycatch of the longline fishery for toothfish (Dissostichus mawsoni and D. eleginoides ... ) in the Ross Sea, Antarctica. Counts of zones visible in sectioned otoliths were used to estimate ... growth parameters for these species. The estimates must be considered preliminary because they are ... unvalidated, the otoliths are quite difficult to interpret, and the sampled fish do not represent the full ...
Meeting Document : WG-FSA-10/19 : Auteur(s): P.L. Horn and C.P. Sutton (New Zealand)
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Developments, considerations and recommendations by the land-based predator survey group: a summary and up-date
Abstract: A summary of considerations and decisions made by the correspondence group on land ... -based predator abundance is provided for comment by the Working Group. In order to complete ... specifications for future survey work, the correspondence group seeks advice from the Working Group on the ... relevant spatial unit for estimation in Area 48 and the required precision for estimation in each unit. A ...
Meeting Document : WG-EMM-05/24 : Auteur(s): C. Southwell (Australia), P. Trathan (United Kingdom), W. Trivelpiece, M. Goebel (USA) and P. Wilson (New Zealand)
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Risk categorisation for Macrourus whitsoni and Amblyraja georgiana in the Ross Sea
georgiana, which are the major bycatch species in the exploratory fishery for toothfish in the Ross Sea ... vulnerable to overfishing. The risk to A. georgiana is mitigated due to a CCAMLR programme to cut all skates ... from longlines whilst still in the water and release them. Macrourus whitsoni were categorized as ... overfishing, catch rates in the toothfish fishery have not declined, juveniles are not selected by the fishery ...
Meeting Document : WG-FSA-05/21 : Auteur(s): R.L. O’Driscoll (New Zealand)
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Description of an AD Model Builder implementation of the exact time of release and recapture stock assessment model of Tuck et al. (2003)
model and applied it to the stock of Patagonian Toothfish, Dissostichus eleginoides,at Macquarie Island ... the Working Group on Fish Stock assessment in 2000 (Tuck et al. 2000; CAMLR-XIX, 2000 paragraphs 3.126 ... , 3.127). The maximum likelihood estimation for this model has more recently been implemented in the AD ... Model Builder software by Dr Tuck. The AD Model Builder executable that implements Tuck et al. (2003) in ...
Meeting Document : WG-FSA-04/75 : Auteur(s): S.G. Candy, A.J. Constable and D. Erceg (Australia)
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ACCURACY OF BENTHIC INVERTEBRATE BY-CATCH IDENTIFICATION BY OBSERVERS OPERATING IN THE HEARD ISLAND AND MCDONALD ISLANDS PATAGONIAN TOOTHFISH LONGLINE FISHERY
Abstract: As a means of testing the accuracy of observer identifications and to provide ... additional data on benthic invertebrate by-catch; observers operating aboard the longline fishing vessel ... to Heard Island and McDonald Islands (HIMI) for onshore verification by taxonomists at the Australian ... Antarctic Division (AAD). Observers displayed a high level of accuracy (89%) in the identification of ...
Meeting Document : WG-FSA-09/23 : Auteur(s): T. Hibberd (Australia)